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Subject[PATCH] leds-lp5521: modify the way of setting led device name
Date
Currently the led device name is fetched from the device_type in
I2C_BOARD_INFO which comes from the platform data. This name is in turn
used to create an entry in sysfs.

If there exists two or more lp5521 on a particular platform, the
device_type in I2C_BOARD_INFO has to be the same, else lp5521 driver
probe wont be called and if used so, results in run time warning "cannot
create sysfs with same name" and hence a failure.

The name that is used to create sysfs entry is to be passed by the
struct led_platform_data. Hence adding an element of type const char *
and change in lp5521 driver to use this name in creating the led device
if present else use the name obtained by I2C_BOARD_INFO.

Signed-off-by: Arun Murthy <arun.murthy@stericsson.com>
---
drivers/leds/leds-lp5521.c | 3 ++-
include/linux/leds-lp5521.h | 1 +
2 files changed, 3 insertions(+), 1 deletions(-)

diff --git a/drivers/leds/leds-lp5521.c b/drivers/leds/leds-lp5521.c
index 33facd0..745ad99 100644
--- a/drivers/leds/leds-lp5521.c
+++ b/drivers/leds/leds-lp5521.c
@@ -651,7 +651,8 @@ static int __init lp5521_init_led(struct lp5521_led *led,
return -EINVAL;
}

- snprintf(name, sizeof(name), "%s:channel%d", client->name, chan);
+ snprintf(name, sizeof(name), "%s:channel%d",
+ pdata->label ?: client->name, chan);
led->cdev.brightness_set = lp5521_set_brightness;
led->cdev.name = name;
res = led_classdev_register(dev, &led->cdev);
diff --git a/include/linux/leds-lp5521.h b/include/linux/leds-lp5521.h
index 38368d7..fd548d2 100644
--- a/include/linux/leds-lp5521.h
+++ b/include/linux/leds-lp5521.h
@@ -42,6 +42,7 @@ struct lp5521_platform_data {
int (*setup_resources)(void);
void (*release_resources)(void);
void (*enable)(bool state);
+ const char *label;
};

#endif /* __LINUX_LP5521_H */
--
1.7.2.dirty


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